See also: https://www.scmp.com/news/china/society/article/3042991/china-flight-systems-jammed-pig-farms-african-swine-fever https://www.scmp.com/news/china/soci

See also: https://www.scmp.com/news/china/society/article/3042991/china-flight-systems-jammed-pig-farms-african-swine-fever https://www.scmp.com/news/china/society/article/3042991/chin... A farm affected by this was jamming transmissions nearby to try and prevent drones from being used to drop tainted items into their pens.